Malicious PDF — malware analysis report

Static analysis result for SHA-256 e474234b74dec365…

MALICIOUS

PDF

44.4 KB Created: 2021-05-11 04:08:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: ab8d205a91671e486519a07d4b8e2493 SHA-1: 4ae2d3d4b9c8f431d2a66777e9cbb049857103a3 SHA-256: e474234b74dec3653806df8636b9a1a716be0d4f8a3393fbc51423ea2872d60c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks, specifically 'free spins for Coin Master', and links to external URLs. The primary URL, https://netcdn.xyz/app/406889139/free-spins-for-coin-master-app-game-hack, is identified as a high-risk redirector. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a phishing or redirection attempt, likely to deliver a second-stage payload or lead the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.xyz/app/406889139/free-spins-for-coin-master-app-game-hack PDF link annotation
    • http://pustaka.mesin.ft.unand.ac.id/repository/can-you-really-hack-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://pustaka.mesin.ft.unand.ac.id/repository/freespinandcoin-blogspot-com_GM406889139.pdfIn PDF document text
    • http://pustaka.mesin.ft.unand.ac.id/repository/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.mesin.ft.unand.ac.id/repository/oprewards-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.mesin.ft.unand.ac.id/repository/coin-master-free-spins-link-fb_GM406889139.pdfIn PDF document text
    • http://pustaka.mesin.ft.unand.ac.id/repository/roblox-online-free-no-download_GM431946152.pdfIn PDF document text
    • http://pustaka.mesin.ft.unand.ac.id/repository/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.mesin.ft.unand.ac.id/repository/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.mesin.ft.unand.ac.id/repository/more-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.mesin.ft.unand.ac.id/repository/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.mesin.ft.unand.ac.id/repository/coin-master-free-spins-usa-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.mesin.ft.unand.ac.id/repository/coin-master-hack-coins_GM406889139.pdfIn PDF document text
    • http://pustaka.mesin.ft.unand.ac.id/repository/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://pustaka.mesin.ft.unand.ac.id/repository/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.mesin.ft.unand.ac.id/repository/moon-static-coin-master-generator-hacks-free_GM406889139.pdfIn PDF document text
    • http://pustaka.mesin.ft.unand.ac.id/repository/free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://pustaka.mesin.ft.unand.ac.id/repository/coin-master-card-link-free_GM406889139.pdfIn PDF document text
    • http://pustaka.mesin.ft.unand.ac.id/repository/can-you-really-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.mesin.ft.unand.ac.id/repository/coin-master-game-android-free-download_GM406889139.pdfIn PDF document text
    • http://pustaka.mesin.ft.unand.ac.id/repository/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a5e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A5E 24688 bytes
SHA-256: 43906766d89dedbf18fd4c2498f0221064bd2093e5564aef0c022e7f8668bb43
font_01_sfnt_off00008259.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8259 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008c44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C44 17884 bytes
SHA-256: c0e07e045f0496ba68af439e810d5bb13e23b0d850ef9426c095223eaa712aa7

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